1455
1455 is the year the Wars of the Roses began.
- Odd
- Composite
Where 1455 fits
Why 1455 is special
Thirty years of intermittent dynastic conflict between two branches of the same family. The rose symbolism was largely applied afterwards, particularly by the Tudors, who benefited from presenting themselves as the resolution.
Factors & digit properties
- Divisors (8)
- 1, 3, 5, 15, 97, 291, 485, 1455
- Prime factorisation
- 3 × 5 × 97
- Digit sum
- 15
- Digital root
- 6
Representations
- Decimal
- 1455
- Binary
- 10110101111
- Octal
- 2657
- Hexadecimal
- 5af
- Roman numeral
- MCDLV
- Scientific notation
- 1.455 × 10^3
Other mathematical patterns
- Deficient number
- Harshad (Niven) number
- Lucky number (mathematical sieve)
Related numbers & connections
The Wars of the Roses began in 1455 and Tewkesbury in 1471 destroyed the Lancastrian cause, though fighting resumed and ran until 1485.
View 1471 →Other connections
- developed from1471
why?
Strength 0.50, confidence "high".
History
The competing roses as emblems of Lancaster and York were emphasised retrospectively, notably by Henry VII, whose claim was strengthened by presenting his reign as the union of two warring houses. The name postdates the wars.
DocumentedHistoryGeography: EnglandPeriod: 1455–1487
Common questions
Is 1455 a prime number?
No, 1455 is not prime.
What are the factors of 1455?
The factors of 1455 are 1, 3, 5, 15, 97, 291, 485, 1455.
What is 1455 in Roman numerals?
1455 in Roman numerals is MCDLV.
About this page's data
Mathematical facts:computed directly from the number's value — nothing to source or verify externally.
Contextual records: 1 reviewer-confirmed record, sourced and reviewed before publication.
Last reviewed: 3 August 2026